EP0172772B1 - Integrierte CMOS-Schaltung und Verfahren zur Herstellung elektrischer Isolationszonen für diese Schaltung - Google Patents
Integrierte CMOS-Schaltung und Verfahren zur Herstellung elektrischer Isolationszonen für diese Schaltung Download PDFInfo
- Publication number
- EP0172772B1 EP0172772B1 EP85401566A EP85401566A EP0172772B1 EP 0172772 B1 EP0172772 B1 EP 0172772B1 EP 85401566 A EP85401566 A EP 85401566A EP 85401566 A EP85401566 A EP 85401566A EP 0172772 B1 EP0172772 B1 EP 0172772B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- trenches
- trench
- production process
- process according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000002955 isolation Methods 0.000 title claims description 33
- 238000000034 method Methods 0.000 title claims description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000000758 substrate Substances 0.000 claims description 42
- 238000005530 etching Methods 0.000 claims description 16
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 229910021332 silicide Inorganic materials 0.000 claims description 6
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 239000003870 refractory metal Substances 0.000 claims description 3
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical group [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 claims description 3
- 229910021342 tungsten silicide Inorganic materials 0.000 claims description 3
- 238000000407 epitaxy Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 229910052814 silicon oxide Inorganic materials 0.000 description 9
- 230000003071 parasitic effect Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000000151 deposition Methods 0.000 description 5
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000001020 plasma etching Methods 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 2
- -1 boron ions Chemical class 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/763—Polycrystalline semiconductor regions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/74—Making of localized buried regions, e.g. buried collector layers, internal connections substrate contacts
- H01L21/743—Making of internal connections, substrate contacts
Definitions
- the transistors 52 and 54 are necessarily located, at a certain distance d from the isolation trench 60 to avoid the formation of a parasitic channel due to the inversion of conductivity on the sides of the trench; the regions separating the trench from the transistors, being a field oxide region 66 (FIG. 1).
- This doping ensures a better electrical connection between the conductive electrodes, produced in the trenches, and the semiconductor substrate, while avoiding making trenches that are too deep.
- a layer of insulating material 4 preferably made of silicon oxide (Si0 2 ).
- This layer 4 can in particular be obtained by thermal oxidation of the silicon substrate 2 at a temperature of the order of 900 ° C.
- This layer 4 will have a thickness varying from 10 to 50 nm (100 to 500 ⁇ ).
- the next step in the process consists in thermally oxidizing the etched substrate 2, for example at a temperature close to 1000 ° C.
- This oxidation makes it possible to obtain an oxide film 12, having a thickness of approximately 100 nm (1000 ⁇ ), covering the sides 14 of the trench as well as the bottom 16 of the latter.
- the next step in the process consists, as shown in FIG. 8, of eliminating the layer of silicon oxide 8 which served as a mask for making the trench 10 and for implanting it in the bottom 16 of the trench.
- Use will be made, for example, of wet etching with a mixture of hydrofluoric acid and ammonium fluoride as the attacking agent.
- the following steps of the method consist in conventionally producing a field oxide 22, for example by thermal oxidation of the material 20 filling the trench 10 when the latter is made of polycrystalline silicon, the layer 6 etched with silicon nitride serving for the location of this field oxide on the trench 10.
- the thickness of this field oxide can be close to 600 nm (6000 ⁇ ).
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Element Separation (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Drying Of Semiconductors (AREA)
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8412463A FR2569055B1 (fr) | 1984-08-07 | 1984-08-07 | Circuit integre cmos et procede de fabrication de zones d'isolation electriques dans ce circuit integre |
FR8412463 | 1984-08-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0172772A2 EP0172772A2 (de) | 1986-02-26 |
EP0172772A3 EP0172772A3 (en) | 1986-03-19 |
EP0172772B1 true EP0172772B1 (de) | 1989-06-07 |
Family
ID=9306865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85401566A Expired EP0172772B1 (de) | 1984-08-07 | 1985-07-31 | Integrierte CMOS-Schaltung und Verfahren zur Herstellung elektrischer Isolationszonen für diese Schaltung |
Country Status (5)
Country | Link |
---|---|
US (1) | US4786960A (de) |
EP (1) | EP0172772B1 (de) |
JP (1) | JPS6143469A (de) |
DE (1) | DE3570948D1 (de) |
FR (1) | FR2569055B1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4819052A (en) * | 1986-12-22 | 1989-04-04 | Texas Instruments Incorporated | Merged bipolar/CMOS technology using electrically active trench |
US4903108A (en) * | 1988-06-21 | 1990-02-20 | Harris Corporation | Radiation hardened complementary transistor integrated circuits |
US5021359A (en) * | 1988-06-21 | 1991-06-04 | Harris Corporation | Radiation hardened complementary transistor integrated circuits |
US5061653A (en) * | 1989-02-22 | 1991-10-29 | Texas Instruments Incorporated | Trench isolation process |
US5108946A (en) * | 1989-05-19 | 1992-04-28 | Motorola, Inc. | Method of forming planar isolation regions |
EP0398730A1 (de) * | 1989-05-19 | 1990-11-22 | Motorola Inc. | Verfahren zur Herstellung planarer Isolationszonen |
JPH07105458B2 (ja) * | 1989-11-21 | 1995-11-13 | 株式会社東芝 | 複合型集積回路素子 |
US5138420A (en) * | 1989-11-24 | 1992-08-11 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device having first and second type field effect transistors separated by a barrier |
US5049521A (en) * | 1989-11-30 | 1991-09-17 | Silicon General, Inc. | Method for forming dielectrically isolated semiconductor devices with contact to the wafer substrate |
US5241211A (en) * | 1989-12-20 | 1993-08-31 | Nec Corporation | Semiconductor device |
US5179038A (en) * | 1989-12-22 | 1993-01-12 | North American Philips Corp., Signetics Division | High density trench isolation for MOS circuits |
US5154946A (en) * | 1990-09-27 | 1992-10-13 | Motorola, Inc. | CMOS structure fabrication |
JP3798808B2 (ja) * | 1991-09-27 | 2006-07-19 | ハリス・コーポレーション | 高いアーリー電壓,高周波性能及び高降伏電壓特性を具備した相補型バイポーラトランジスター及びその製造方法 |
US5420061A (en) | 1993-08-13 | 1995-05-30 | Micron Semiconductor, Inc. | Method for improving latchup immunity in a dual-polysilicon gate process |
US5681776A (en) * | 1994-03-15 | 1997-10-28 | National Semiconductor Corporation | Planar selective field oxide isolation process using SEG/ELO |
JPH1022462A (ja) | 1996-06-28 | 1998-01-23 | Sharp Corp | 半導体装置及びその製造方法 |
SG142115A1 (en) * | 2002-06-14 | 2008-05-28 | Micron Technology Inc | Wafer level packaging |
SG119185A1 (en) | 2003-05-06 | 2006-02-28 | Micron Technology Inc | Method for packaging circuits and packaged circuits |
US8338887B2 (en) | 2005-07-06 | 2012-12-25 | Infineon Technologies Ag | Buried gate transistor |
US7652329B2 (en) * | 2007-07-13 | 2010-01-26 | Semiconductor Components Industries, Llc | Vertical MOS transistor and method therefor |
US9831317B1 (en) * | 2017-03-02 | 2017-11-28 | Globalfoundries Inc. | Buried contact structures for a vertical field-effect transistor |
US10607881B2 (en) * | 2017-10-06 | 2020-03-31 | Globalfoundries Singapore Pte. Ltd. | Device isolation structure and methods of manufacturing thereof |
CN113496939A (zh) * | 2020-04-03 | 2021-10-12 | 无锡华润上华科技有限公司 | 一种半导体器件及其制作方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4044452A (en) * | 1976-10-06 | 1977-08-30 | International Business Machines Corporation | Process for making field effect and bipolar transistors on the same semiconductor chip |
JPS5544743A (en) * | 1978-09-26 | 1980-03-29 | Fujitsu Ltd | Manufacture of semiconductor device |
US4454646A (en) * | 1981-08-27 | 1984-06-19 | International Business Machines Corporation | Isolation for high density integrated circuits |
US4528581A (en) * | 1981-10-21 | 1985-07-09 | Hughes Aircraft Company | High density CMOS devices with conductively interconnected wells |
JPS58220443A (ja) * | 1982-06-16 | 1983-12-22 | Toshiba Corp | 半導体装置の製造方法 |
US4503451A (en) * | 1982-07-30 | 1985-03-05 | Motorola, Inc. | Low resistance buried power bus for integrated circuits |
US4621276A (en) * | 1984-05-24 | 1986-11-04 | Texas Instruments Incorporated | Buried contacts for N and P channel devices in an SOI-CMOS process using a single N+polycrystalline silicon layer |
US4589193A (en) * | 1984-06-29 | 1986-05-20 | International Business Machines Corporation | Metal silicide channel stoppers for integrated circuits and method for making the same |
-
1984
- 1984-08-07 FR FR8412463A patent/FR2569055B1/fr not_active Expired
-
1985
- 1985-07-30 JP JP60166935A patent/JPS6143469A/ja active Pending
- 1985-07-31 EP EP85401566A patent/EP0172772B1/de not_active Expired
- 1985-07-31 DE DE8585401566T patent/DE3570948D1/de not_active Expired
-
1987
- 1987-07-23 US US07/077,092 patent/US4786960A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
IEDM 1983, p.23-26, K.M.CHAM et al.:"Caracterisation and Modelling of the trench for the tranch isolated CMOS Technology" * |
Also Published As
Publication number | Publication date |
---|---|
DE3570948D1 (en) | 1989-07-13 |
FR2569055A1 (fr) | 1986-02-14 |
EP0172772A2 (de) | 1986-02-26 |
JPS6143469A (ja) | 1986-03-03 |
US4786960A (en) | 1988-11-22 |
FR2569055B1 (fr) | 1986-12-12 |
EP0172772A3 (en) | 1986-03-19 |
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